|
0
|
1
|
|
|
2 /*
|
|
|
3 * Copyright (C) Igor Sysoev
|
|
|
4 */
|
|
|
5
|
|
|
6
|
|
|
7 #include <ngx_config.h>
|
|
|
8 #include <ngx_core.h>
|
|
|
9 #include <ngx_event.h>
|
|
|
10 #include <ngx_event_pipe.h>
|
|
|
11
|
|
|
12
|
|
|
13 static ngx_int_t ngx_event_pipe_read_upstream(ngx_event_pipe_t *p);
|
|
|
14 static ngx_int_t ngx_event_pipe_write_to_downstream(ngx_event_pipe_t *p);
|
|
|
15
|
|
|
16 static ngx_int_t ngx_event_pipe_write_chain_to_temp_file(ngx_event_pipe_t *p);
|
|
16
|
17 static ngx_inline void ngx_event_pipe_remove_shadow_links(ngx_buf_t *buf);
|
|
|
18 static ngx_inline void ngx_event_pipe_free_shadow_raw_buf(ngx_chain_t **free,
|
|
0
|
19 ngx_buf_t *buf);
|
|
|
20 static ngx_int_t ngx_event_pipe_drain_chains(ngx_event_pipe_t *p);
|
|
|
21
|
|
|
22
|
|
126
|
23 ngx_int_t
|
|
|
24 ngx_event_pipe(ngx_event_pipe_t *p, int do_write)
|
|
0
|
25 {
|
|
|
26 u_int flags;
|
|
|
27 ngx_event_t *rev, *wev;
|
|
|
28
|
|
|
29 for ( ;; ) {
|
|
|
30 if (do_write) {
|
|
32
|
31 p->log->action = "sending to client";
|
|
|
32
|
|
0
|
33 if (ngx_event_pipe_write_to_downstream(p) == NGX_ABORT) {
|
|
|
34 return NGX_ABORT;
|
|
|
35 }
|
|
|
36 }
|
|
|
37
|
|
|
38 p->read = 0;
|
|
|
39 p->upstream_blocked = 0;
|
|
|
40
|
|
32
|
41 p->log->action = "reading upstream";
|
|
|
42
|
|
0
|
43 if (ngx_event_pipe_read_upstream(p) == NGX_ABORT) {
|
|
|
44 return NGX_ABORT;
|
|
|
45 }
|
|
|
46
|
|
|
47 if (!p->read && !p->upstream_blocked) {
|
|
|
48 break;
|
|
|
49 }
|
|
|
50
|
|
|
51 do_write = 1;
|
|
|
52 }
|
|
|
53
|
|
|
54 if (p->upstream->fd != -1) {
|
|
|
55 rev = p->upstream->read;
|
|
|
56
|
|
|
57 flags = (rev->eof || rev->error) ? NGX_CLOSE_EVENT : 0;
|
|
|
58
|
|
|
59 if (ngx_handle_read_event(rev, flags) == NGX_ERROR) {
|
|
|
60 return NGX_ABORT;
|
|
|
61 }
|
|
|
62
|
|
|
63 if (rev->active) {
|
|
|
64 ngx_add_timer(rev, p->read_timeout);
|
|
|
65 }
|
|
|
66 }
|
|
|
67
|
|
58
|
68 if (p->downstream->fd != -1 && p->downstream->data == p->output_ctx) {
|
|
0
|
69 wev = p->downstream->write;
|
|
2
|
70 if (ngx_handle_write_event(wev, p->send_lowat) == NGX_ERROR) {
|
|
0
|
71 return NGX_ABORT;
|
|
|
72 }
|
|
|
73
|
|
58
|
74 if (wev->active && !wev->ready && !wev->delayed) {
|
|
0
|
75 ngx_add_timer(wev, p->send_timeout);
|
|
|
76 }
|
|
|
77 }
|
|
|
78
|
|
|
79 return NGX_OK;
|
|
|
80 }
|
|
|
81
|
|
|
82
|
|
126
|
83 static ngx_int_t
|
|
|
84 ngx_event_pipe_read_upstream(ngx_event_pipe_t *p)
|
|
0
|
85 {
|
|
10
|
86 ssize_t n, size;
|
|
|
87 ngx_int_t rc;
|
|
0
|
88 ngx_buf_t *b;
|
|
56
|
89 ngx_chain_t *chain, *cl, *ln;
|
|
0
|
90
|
|
|
91 if (p->upstream_eof || p->upstream_error || p->upstream_done) {
|
|
|
92 return NGX_OK;
|
|
|
93 }
|
|
|
94
|
|
|
95 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
|
96 "pipe read upstream: %d", p->upstream->read->ready);
|
|
|
97
|
|
|
98 for ( ;; ) {
|
|
|
99
|
|
|
100 if (p->upstream_eof || p->upstream_error || p->upstream_done) {
|
|
|
101 break;
|
|
|
102 }
|
|
|
103
|
|
|
104 if (p->preread_bufs == NULL && !p->upstream->read->ready) {
|
|
|
105 break;
|
|
|
106 }
|
|
|
107
|
|
|
108 if (p->preread_bufs) {
|
|
|
109
|
|
|
110 /* use the pre-read bufs if they exist */
|
|
|
111
|
|
|
112 chain = p->preread_bufs;
|
|
|
113 p->preread_bufs = NULL;
|
|
|
114 n = p->preread_size;
|
|
|
115
|
|
|
116 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
10
|
117 "pipe preread: %z", n);
|
|
0
|
118
|
|
|
119 if (n) {
|
|
|
120 p->read = 1;
|
|
|
121 }
|
|
|
122
|
|
|
123 } else {
|
|
|
124
|
|
|
125 /*
|
|
|
126 * kqueue notifies about the end of file or a pending error.
|
|
|
127 * This test allows not to allocate a buf on these conditions
|
|
126
|
128 * and not to call c->recv_chain().
|
|
0
|
129 */
|
|
|
130
|
|
|
131 if (p->upstream->read->available == 0
|
|
|
132 && p->upstream->read->pending_eof)
|
|
|
133 {
|
|
|
134 p->upstream->read->ready = 0;
|
|
|
135 p->upstream->read->eof = 0;
|
|
|
136 p->upstream_eof = 1;
|
|
|
137 p->read = 1;
|
|
|
138
|
|
18
|
139 #if (NGX_HAVE_KQUEUE)
|
|
0
|
140 if (p->upstream->read->kq_errno) {
|
|
|
141 p->upstream->read->error = 1;
|
|
|
142 p->upstream_error = 1;
|
|
|
143 p->upstream_eof = 0;
|
|
|
144
|
|
|
145 ngx_log_error(NGX_LOG_ERR, p->log,
|
|
|
146 p->upstream->read->kq_errno,
|
|
|
147 "readv() failed");
|
|
|
148 }
|
|
|
149 #endif
|
|
|
150
|
|
|
151 break;
|
|
|
152 }
|
|
|
153
|
|
|
154 if (p->free_raw_bufs) {
|
|
|
155
|
|
|
156 /* use the free bufs if they exist */
|
|
|
157
|
|
|
158 chain = p->free_raw_bufs;
|
|
|
159 if (p->single_buf) {
|
|
|
160 p->free_raw_bufs = p->free_raw_bufs->next;
|
|
|
161 chain->next = NULL;
|
|
|
162 } else {
|
|
|
163 p->free_raw_bufs = NULL;
|
|
|
164 }
|
|
|
165
|
|
|
166 } else if (p->allocated < p->bufs.num) {
|
|
|
167
|
|
|
168 /* allocate a new buf if it's still allowed */
|
|
|
169
|
|
50
|
170 b = ngx_create_temp_buf(p->pool, p->bufs.size);
|
|
|
171 if (b == NULL) {
|
|
0
|
172 return NGX_ABORT;
|
|
|
173 }
|
|
|
174
|
|
|
175 p->allocated++;
|
|
|
176
|
|
50
|
177 chain = ngx_alloc_chain_link(p->pool);
|
|
|
178 if (chain == NULL) {
|
|
32
|
179 return NGX_ABORT;
|
|
|
180 }
|
|
|
181
|
|
|
182 chain->buf = b;
|
|
|
183 chain->next = NULL;
|
|
0
|
184
|
|
58
|
185 } else if (!p->cachable
|
|
|
186 && p->downstream->data == p->output_ctx
|
|
76
|
187 && p->downstream->write->ready
|
|
|
188 && !p->downstream->write->delayed)
|
|
58
|
189 {
|
|
0
|
190 /*
|
|
|
191 * if the bufs are not needed to be saved in a cache and
|
|
|
192 * a downstream is ready then write the bufs to a downstream
|
|
|
193 */
|
|
|
194
|
|
|
195 p->upstream_blocked = 1;
|
|
|
196
|
|
|
197 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
|
198 "pipe downstream ready");
|
|
|
199
|
|
|
200 break;
|
|
|
201
|
|
|
202 } else if (p->cachable
|
|
|
203 || p->temp_file->offset < p->max_temp_file_size)
|
|
|
204 {
|
|
|
205
|
|
|
206 /*
|
|
32
|
207 * if it is allowed, then save some bufs from r->in
|
|
0
|
208 * to a temporary file, and add them to a r->out chain
|
|
|
209 */
|
|
|
210
|
|
|
211 rc = ngx_event_pipe_write_chain_to_temp_file(p);
|
|
|
212
|
|
|
213 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
10
|
214 "pipe temp offset: %O", p->temp_file->offset);
|
|
0
|
215
|
|
70
|
216 if (rc == NGX_BUSY) {
|
|
|
217 break;
|
|
|
218 }
|
|
|
219
|
|
0
|
220 if (rc == NGX_AGAIN) {
|
|
|
221 if (ngx_event_flags & NGX_USE_LEVEL_EVENT
|
|
|
222 && p->upstream->read->active
|
|
|
223 && p->upstream->read->ready)
|
|
|
224 {
|
|
|
225 if (ngx_del_event(p->upstream->read, NGX_READ_EVENT, 0)
|
|
126
|
226 == NGX_ERROR)
|
|
0
|
227 {
|
|
|
228 return NGX_ABORT;
|
|
|
229 }
|
|
|
230 }
|
|
|
231 }
|
|
|
232
|
|
|
233 if (rc != NGX_OK) {
|
|
|
234 return rc;
|
|
|
235 }
|
|
|
236
|
|
|
237 chain = p->free_raw_bufs;
|
|
|
238 if (p->single_buf) {
|
|
|
239 p->free_raw_bufs = p->free_raw_bufs->next;
|
|
|
240 chain->next = NULL;
|
|
|
241 } else {
|
|
|
242 p->free_raw_bufs = NULL;
|
|
|
243 }
|
|
|
244
|
|
|
245 } else {
|
|
|
246
|
|
32
|
247 /* there are no bufs to read in */
|
|
0
|
248
|
|
|
249 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
|
250 "no pipe bufs to read in");
|
|
126
|
251
|
|
0
|
252 break;
|
|
|
253 }
|
|
|
254
|
|
126
|
255 n = p->upstream->recv_chain(p->upstream, chain);
|
|
0
|
256
|
|
|
257 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
10
|
258 "pipe recv chain: %z", n);
|
|
0
|
259
|
|
|
260 if (p->free_raw_bufs) {
|
|
|
261 chain->next = p->free_raw_bufs;
|
|
|
262 }
|
|
|
263 p->free_raw_bufs = chain;
|
|
|
264
|
|
|
265 if (n == NGX_ERROR) {
|
|
|
266 p->upstream_error = 1;
|
|
|
267 return NGX_ERROR;
|
|
|
268 }
|
|
|
269
|
|
|
270 if (n == NGX_AGAIN) {
|
|
|
271 if (p->single_buf) {
|
|
|
272 ngx_event_pipe_remove_shadow_links(chain->buf);
|
|
|
273 }
|
|
|
274
|
|
|
275 break;
|
|
|
276 }
|
|
|
277
|
|
|
278 p->read = 1;
|
|
|
279
|
|
|
280 if (n == 0) {
|
|
|
281 p->upstream_eof = 1;
|
|
|
282 break;
|
|
|
283 }
|
|
|
284 }
|
|
|
285
|
|
|
286 p->read_length += n;
|
|
|
287 cl = chain;
|
|
|
288
|
|
|
289 while (cl && n > 0) {
|
|
|
290
|
|
|
291 ngx_event_pipe_remove_shadow_links(cl->buf);
|
|
|
292
|
|
|
293 size = cl->buf->end - cl->buf->last;
|
|
|
294
|
|
|
295 if (n >= size) {
|
|
|
296 cl->buf->last = cl->buf->end;
|
|
|
297
|
|
|
298 /* STUB */ cl->buf->num = p->num++;
|
|
|
299
|
|
|
300 if (p->input_filter(p, cl->buf) == NGX_ERROR) {
|
|
|
301 return NGX_ABORT;
|
|
|
302 }
|
|
|
303
|
|
|
304 n -= size;
|
|
56
|
305 ln = cl;
|
|
0
|
306 cl = cl->next;
|
|
56
|
307 ngx_free_chain(p->pool, ln);
|
|
0
|
308
|
|
|
309 } else {
|
|
|
310 cl->buf->last += n;
|
|
|
311 n = 0;
|
|
|
312 }
|
|
|
313 }
|
|
|
314
|
|
|
315 p->free_raw_bufs = cl;
|
|
|
316 }
|
|
|
317
|
|
|
318 #if (NGX_DEBUG)
|
|
|
319
|
|
2
|
320 for (cl = p->busy; cl; cl = cl->next) {
|
|
32
|
321 ngx_log_debug8(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
|
322 "pipe buf busy s:%d t:%d f:%d "
|
|
|
323 "%p, pos %p, size: %z "
|
|
|
324 "file: %O, size: %z",
|
|
|
325 (cl->buf->shadow ? 1 : 0),
|
|
|
326 cl->buf->temporary, cl->buf->in_file,
|
|
0
|
327 cl->buf->start, cl->buf->pos,
|
|
32
|
328 cl->buf->last - cl->buf->pos,
|
|
|
329 cl->buf->file_pos,
|
|
|
330 cl->buf->file_last - cl->buf->file_pos);
|
|
0
|
331 }
|
|
|
332
|
|
2
|
333 for (cl = p->out; cl; cl = cl->next) {
|
|
32
|
334 ngx_log_debug8(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
|
335 "pipe buf out s:%d t:%d f:%d "
|
|
|
336 "%p, pos %p, size: %z "
|
|
|
337 "file: %O, size: %z",
|
|
|
338 (cl->buf->shadow ? 1 : 0),
|
|
|
339 cl->buf->temporary, cl->buf->in_file,
|
|
|
340 cl->buf->start, cl->buf->pos,
|
|
|
341 cl->buf->last - cl->buf->pos,
|
|
|
342 cl->buf->file_pos,
|
|
|
343 cl->buf->file_last - cl->buf->file_pos);
|
|
2
|
344 }
|
|
|
345
|
|
|
346 for (cl = p->in; cl; cl = cl->next) {
|
|
32
|
347 ngx_log_debug8(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
|
348 "pipe buf in s:%d t:%d f:%d "
|
|
|
349 "%p, pos %p, size: %z "
|
|
|
350 "file: %O, size: %z",
|
|
|
351 (cl->buf->shadow ? 1 : 0),
|
|
|
352 cl->buf->temporary, cl->buf->in_file,
|
|
0
|
353 cl->buf->start, cl->buf->pos,
|
|
32
|
354 cl->buf->last - cl->buf->pos,
|
|
|
355 cl->buf->file_pos,
|
|
|
356 cl->buf->file_last - cl->buf->file_pos);
|
|
0
|
357 }
|
|
|
358
|
|
|
359 for (cl = p->free_raw_bufs; cl; cl = cl->next) {
|
|
32
|
360 ngx_log_debug8(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
|
361 "pipe buf free s:%d t:%d f:%d "
|
|
|
362 "%p, pos %p, size: %z "
|
|
|
363 "file: %O, size: %z",
|
|
|
364 (cl->buf->shadow ? 1 : 0),
|
|
|
365 cl->buf->temporary, cl->buf->in_file,
|
|
|
366 cl->buf->start, cl->buf->pos,
|
|
|
367 cl->buf->last - cl->buf->pos,
|
|
|
368 cl->buf->file_pos,
|
|
|
369 cl->buf->file_last - cl->buf->file_pos);
|
|
0
|
370 }
|
|
|
371
|
|
|
372 #endif
|
|
|
373
|
|
|
374 if ((p->upstream_eof || p->upstream_error) && p->free_raw_bufs) {
|
|
|
375
|
|
|
376 /* STUB */ p->free_raw_bufs->buf->num = p->num++;
|
|
|
377
|
|
|
378 if (p->input_filter(p, p->free_raw_bufs->buf) == NGX_ERROR) {
|
|
|
379 return NGX_ABORT;
|
|
|
380 }
|
|
|
381
|
|
|
382 p->free_raw_bufs = p->free_raw_bufs->next;
|
|
|
383
|
|
|
384 if (p->free_bufs) {
|
|
|
385 for (cl = p->free_raw_bufs; cl; cl = cl->next) {
|
|
2
|
386 if (cl->buf->shadow == NULL) {
|
|
126
|
387 ngx_pfree(p->pool, cl->buf->start);
|
|
2
|
388 }
|
|
0
|
389 }
|
|
|
390 }
|
|
|
391 }
|
|
|
392
|
|
|
393 if (p->cachable && p->in) {
|
|
|
394 if (ngx_event_pipe_write_chain_to_temp_file(p) == NGX_ABORT) {
|
|
|
395 return NGX_ABORT;
|
|
|
396 }
|
|
|
397 }
|
|
|
398
|
|
|
399 return NGX_OK;
|
|
|
400 }
|
|
|
401
|
|
|
402
|
|
126
|
403 static ngx_int_t
|
|
|
404 ngx_event_pipe_write_to_downstream(ngx_event_pipe_t *p)
|
|
0
|
405 {
|
|
28
|
406 size_t bsize;
|
|
0
|
407 ngx_uint_t flush;
|
|
32
|
408 ngx_chain_t *out, **ll, *cl;
|
|
0
|
409
|
|
|
410 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
|
411 "pipe write downstream: %d", p->downstream->write->ready);
|
|
|
412
|
|
|
413 for ( ;; ) {
|
|
|
414 if (p->downstream_error) {
|
|
|
415 return ngx_event_pipe_drain_chains(p);
|
|
|
416 }
|
|
|
417
|
|
|
418 if (p->upstream_eof || p->upstream_error || p->upstream_done) {
|
|
|
419
|
|
|
420 /* pass the p->out and p->in chains to the output filter */
|
|
|
421
|
|
58
|
422 for (cl = p->busy; cl; cl = cl->next) {
|
|
|
423 cl->buf->recycled = 0;
|
|
|
424 }
|
|
|
425
|
|
0
|
426 if (p->out) {
|
|
|
427 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
|
428 "pipe write downstream flush out");
|
|
|
429
|
|
58
|
430 for (cl = p->out; cl; cl = cl->next) {
|
|
|
431 cl->buf->recycled = 0;
|
|
|
432 }
|
|
|
433
|
|
0
|
434 if (p->output_filter(p->output_ctx, p->out) == NGX_ERROR) {
|
|
|
435 p->downstream_error = 1;
|
|
|
436 return ngx_event_pipe_drain_chains(p);
|
|
|
437 }
|
|
|
438
|
|
|
439 p->out = NULL;
|
|
|
440 }
|
|
|
441
|
|
|
442 if (p->in) {
|
|
|
443 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
|
444 "pipe write downstream flush in");
|
|
|
445
|
|
58
|
446 for (cl = p->in; cl; cl = cl->next) {
|
|
|
447 cl->buf->recycled = 0;
|
|
|
448 }
|
|
|
449
|
|
0
|
450 if (p->output_filter(p->output_ctx, p->in) == NGX_ERROR) {
|
|
|
451 p->downstream_error = 1;
|
|
|
452 return ngx_event_pipe_drain_chains(p);
|
|
|
453 }
|
|
|
454
|
|
|
455 p->in = NULL;
|
|
|
456 }
|
|
|
457
|
|
|
458 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
|
459 "pipe write downstream done");
|
|
|
460
|
|
|
461 /* TODO: free unused bufs */
|
|
|
462
|
|
|
463 p->downstream_done = 1;
|
|
|
464 break;
|
|
|
465 }
|
|
|
466
|
|
58
|
467 if (p->downstream->data != p->output_ctx
|
|
76
|
468 || !p->downstream->write->ready
|
|
|
469 || p->downstream->write->delayed)
|
|
58
|
470 {
|
|
0
|
471 break;
|
|
|
472 }
|
|
|
473
|
|
28
|
474 /* bsize is the size of the busy recycled bufs */
|
|
0
|
475
|
|
|
476 bsize = 0;
|
|
|
477
|
|
|
478 for (cl = p->busy; cl; cl = cl->next) {
|
|
28
|
479 if (cl->buf->recycled) {
|
|
|
480 bsize += cl->buf->end - cl->buf->start;
|
|
|
481 }
|
|
0
|
482 }
|
|
|
483
|
|
|
484 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
28
|
485 "pipe write busy: %uz", bsize);
|
|
0
|
486
|
|
|
487 out = NULL;
|
|
|
488 ll = NULL;
|
|
|
489 flush = 0;
|
|
|
490
|
|
|
491 for ( ;; ) {
|
|
|
492 if (p->out) {
|
|
|
493 cl = p->out;
|
|
|
494
|
|
28
|
495 if (cl->buf->recycled
|
|
|
496 && bsize + cl->buf->last - cl->buf->pos > p->busy_size)
|
|
|
497 {
|
|
0
|
498 flush = 1;
|
|
|
499 break;
|
|
|
500 }
|
|
|
501
|
|
|
502 p->out = p->out->next;
|
|
28
|
503
|
|
|
504 ngx_event_pipe_free_shadow_raw_buf(&p->free_raw_bufs, cl->buf);
|
|
0
|
505
|
|
|
506 } else if (!p->cachable && p->in) {
|
|
|
507 cl = p->in;
|
|
|
508
|
|
28
|
509 if (cl->buf->recycled
|
|
|
510 && bsize + cl->buf->last - cl->buf->pos > p->busy_size)
|
|
|
511 {
|
|
0
|
512 flush = 1;
|
|
|
513 break;
|
|
|
514 }
|
|
|
515
|
|
|
516 p->in = p->in->next;
|
|
|
517
|
|
|
518 } else {
|
|
|
519 break;
|
|
|
520 }
|
|
|
521
|
|
28
|
522 if (cl->buf->recycled) {
|
|
|
523 bsize += cl->buf->last - cl->buf->pos;
|
|
|
524 }
|
|
|
525
|
|
0
|
526 cl->next = NULL;
|
|
50
|
527
|
|
|
528 if (out) {
|
|
|
529 *ll = cl;
|
|
|
530 } else {
|
|
|
531 out = cl;
|
|
|
532 }
|
|
|
533 ll = &cl->next;
|
|
0
|
534 }
|
|
|
535
|
|
|
536 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
10
|
537 "pipe write: out:%p, f:%d", out, flush);
|
|
0
|
538
|
|
|
539 if (out == NULL && !flush) {
|
|
|
540 break;
|
|
|
541 }
|
|
|
542
|
|
|
543 if (p->output_filter(p->output_ctx, out) == NGX_ERROR) {
|
|
|
544 p->downstream_error = 1;
|
|
|
545 return ngx_event_pipe_drain_chains(p);
|
|
|
546 }
|
|
|
547
|
|
|
548 ngx_chain_update_chains(&p->free, &p->busy, &out, p->tag);
|
|
|
549
|
|
|
550 for (cl = p->free; cl; cl = cl->next) {
|
|
|
551
|
|
|
552 if (cl->buf->temp_file) {
|
|
|
553 if (p->cachable || !p->cyclic_temp_file) {
|
|
|
554 continue;
|
|
|
555 }
|
|
|
556
|
|
|
557 /* reset p->temp_offset if all bufs had been sent */
|
|
|
558
|
|
|
559 if (cl->buf->file_last == p->temp_file->offset) {
|
|
|
560 p->temp_file->offset = 0;
|
|
|
561 }
|
|
|
562 }
|
|
|
563
|
|
|
564 /* TODO: free buf if p->free_bufs && upstream done */
|
|
|
565
|
|
|
566 /* add the free shadow raw buf to p->free_raw_bufs */
|
|
|
567
|
|
|
568 if (cl->buf->last_shadow) {
|
|
32
|
569 if (ngx_event_pipe_add_free_buf(p, cl->buf->shadow) != NGX_OK) {
|
|
|
570 return NGX_ABORT;
|
|
|
571 }
|
|
0
|
572
|
|
|
573 cl->buf->last_shadow = 0;
|
|
|
574 }
|
|
|
575
|
|
|
576 cl->buf->shadow = NULL;
|
|
|
577 }
|
|
|
578 }
|
|
|
579
|
|
|
580 return NGX_OK;
|
|
|
581 }
|
|
|
582
|
|
|
583
|
|
126
|
584 static ngx_int_t
|
|
|
585 ngx_event_pipe_write_chain_to_temp_file(ngx_event_pipe_t *p)
|
|
0
|
586 {
|
|
|
587 ssize_t size, bsize;
|
|
|
588 ngx_buf_t *b;
|
|
|
589 ngx_chain_t *cl, *tl, *next, *out, **ll, **last_free, fl;
|
|
|
590
|
|
|
591 if (p->buf_to_file) {
|
|
|
592 fl.buf = p->buf_to_file;
|
|
|
593 fl.next = p->in;
|
|
|
594 out = &fl;
|
|
|
595
|
|
|
596 } else {
|
|
|
597 out = p->in;
|
|
|
598 }
|
|
|
599
|
|
|
600 if (!p->cachable) {
|
|
|
601
|
|
|
602 size = 0;
|
|
|
603 cl = out;
|
|
|
604 ll = NULL;
|
|
|
605
|
|
|
606 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
10
|
607 "pipe offset: %O", p->temp_file->offset);
|
|
0
|
608
|
|
|
609 do {
|
|
|
610 bsize = cl->buf->last - cl->buf->pos;
|
|
|
611
|
|
|
612 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
10
|
613 "pipe buf %p, pos %p, size: %z",
|
|
0
|
614 cl->buf->start, cl->buf->pos, bsize);
|
|
|
615
|
|
|
616 if ((size + bsize > p->temp_file_write_size)
|
|
|
617 || (p->temp_file->offset + size + bsize > p->max_temp_file_size))
|
|
|
618 {
|
|
|
619 break;
|
|
|
620 }
|
|
|
621
|
|
|
622 size += bsize;
|
|
|
623 ll = &cl->next;
|
|
|
624 cl = cl->next;
|
|
|
625
|
|
|
626 } while (cl);
|
|
|
627
|
|
10
|
628 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0, "size: %z", size);
|
|
0
|
629
|
|
70
|
630 if (ll == NULL) {
|
|
|
631 return NGX_BUSY;
|
|
|
632 }
|
|
|
633
|
|
0
|
634 if (cl) {
|
|
|
635 p->in = cl;
|
|
|
636 *ll = NULL;
|
|
|
637
|
|
|
638 } else {
|
|
|
639 p->in = NULL;
|
|
|
640 p->last_in = &p->in;
|
|
|
641 }
|
|
|
642
|
|
|
643 } else {
|
|
|
644 p->in = NULL;
|
|
|
645 p->last_in = &p->in;
|
|
|
646 }
|
|
|
647
|
|
|
648 if (ngx_write_chain_to_temp_file(p->temp_file, out) == NGX_ERROR) {
|
|
|
649 return NGX_ABORT;
|
|
|
650 }
|
|
|
651
|
|
|
652 for (last_free = &p->free_raw_bufs;
|
|
|
653 *last_free != NULL;
|
|
|
654 last_free = &(*last_free)->next)
|
|
|
655 {
|
|
|
656 /* void */
|
|
|
657 }
|
|
|
658
|
|
|
659 if (p->buf_to_file) {
|
|
|
660 p->temp_file->offset = p->buf_to_file->last - p->buf_to_file->pos;
|
|
|
661 p->buf_to_file = NULL;
|
|
|
662 out = out->next;
|
|
|
663 }
|
|
|
664
|
|
|
665 for (cl = out; cl; cl = next) {
|
|
|
666 next = cl->next;
|
|
|
667 cl->next = NULL;
|
|
|
668
|
|
|
669 b = cl->buf;
|
|
|
670 b->file = &p->temp_file->file;
|
|
|
671 b->file_pos = p->temp_file->offset;
|
|
|
672 p->temp_file->offset += b->last - b->pos;
|
|
|
673 b->file_last = p->temp_file->offset;
|
|
|
674
|
|
|
675 b->in_file = 1;
|
|
|
676 b->temp_file = 1;
|
|
|
677
|
|
50
|
678 if (p->out) {
|
|
|
679 *p->last_out = cl;
|
|
|
680 } else {
|
|
|
681 p->out = cl;
|
|
|
682 }
|
|
|
683 p->last_out = &cl->next;
|
|
0
|
684
|
|
|
685 if (b->last_shadow) {
|
|
32
|
686
|
|
50
|
687 tl = ngx_alloc_chain_link(p->pool);
|
|
|
688 if (tl == NULL) {
|
|
32
|
689 return NGX_ABORT;
|
|
|
690 }
|
|
|
691
|
|
|
692 tl->buf = b->shadow;
|
|
|
693 tl->next = NULL;
|
|
|
694
|
|
|
695 *last_free = tl;
|
|
|
696 last_free = &tl->next;
|
|
|
697
|
|
2
|
698 b->shadow->pos = b->shadow->start;
|
|
|
699 b->shadow->last = b->shadow->start;
|
|
|
700
|
|
32
|
701 ngx_event_pipe_remove_shadow_links(b->shadow);
|
|
0
|
702 }
|
|
|
703 }
|
|
|
704
|
|
|
705 return NGX_OK;
|
|
|
706 }
|
|
|
707
|
|
|
708
|
|
|
709 /* the copy input filter */
|
|
|
710
|
|
126
|
711 ngx_int_t
|
|
|
712 ngx_event_pipe_copy_input_filter(ngx_event_pipe_t *p, ngx_buf_t *buf)
|
|
0
|
713 {
|
|
|
714 ngx_buf_t *b;
|
|
|
715 ngx_chain_t *cl;
|
|
|
716
|
|
|
717 if (buf->pos == buf->last) {
|
|
|
718 return NGX_OK;
|
|
|
719 }
|
|
|
720
|
|
|
721 if (p->free) {
|
|
56
|
722 cl = p->free;
|
|
|
723 b = cl->buf;
|
|
|
724 p->free = cl->next;
|
|
|
725 ngx_free_chain(p->pool, cl);
|
|
0
|
726
|
|
|
727 } else {
|
|
50
|
728 b = ngx_alloc_buf(p->pool);
|
|
|
729 if (b == NULL) {
|
|
0
|
730 return NGX_ERROR;
|
|
|
731 }
|
|
|
732 }
|
|
|
733
|
|
|
734 ngx_memcpy(b, buf, sizeof(ngx_buf_t));
|
|
|
735 b->shadow = buf;
|
|
|
736 b->tag = p->tag;
|
|
|
737 b->last_shadow = 1;
|
|
|
738 b->recycled = 1;
|
|
|
739 buf->shadow = b;
|
|
|
740
|
|
50
|
741 cl = ngx_alloc_chain_link(p->pool);
|
|
|
742 if (cl == NULL) {
|
|
32
|
743 return NGX_ERROR;
|
|
|
744 }
|
|
|
745
|
|
|
746 cl->buf = b;
|
|
|
747 cl->next = NULL;
|
|
0
|
748
|
|
28
|
749 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0, "input buf #%d", b->num);
|
|
0
|
750
|
|
50
|
751 if (p->in) {
|
|
|
752 *p->last_in = cl;
|
|
|
753 } else {
|
|
|
754 p->in = cl;
|
|
|
755 }
|
|
|
756 p->last_in = &cl->next;
|
|
0
|
757
|
|
|
758 return NGX_OK;
|
|
|
759 }
|
|
|
760
|
|
|
761
|
|
126
|
762 static ngx_inline void
|
|
|
763 ngx_event_pipe_remove_shadow_links(ngx_buf_t *buf)
|
|
0
|
764 {
|
|
|
765 ngx_buf_t *b, *next;
|
|
|
766
|
|
2
|
767 b = buf->shadow;
|
|
|
768
|
|
|
769 if (b == NULL) {
|
|
0
|
770 return;
|
|
|
771 }
|
|
|
772
|
|
|
773 while (!b->last_shadow) {
|
|
|
774 next = b->shadow;
|
|
|
775
|
|
2
|
776 b->temporary = 0;
|
|
|
777 b->recycled = 0;
|
|
0
|
778
|
|
|
779 b->shadow = NULL;
|
|
|
780 b = next;
|
|
|
781 }
|
|
|
782
|
|
2
|
783 b->temporary = 0;
|
|
|
784 b->recycled = 0;
|
|
0
|
785 b->last_shadow = 0;
|
|
|
786
|
|
|
787 b->shadow = NULL;
|
|
|
788
|
|
|
789 buf->shadow = NULL;
|
|
|
790 }
|
|
|
791
|
|
|
792
|
|
126
|
793 static ngx_inline void
|
|
|
794 ngx_event_pipe_free_shadow_raw_buf(ngx_chain_t **free, ngx_buf_t *buf)
|
|
0
|
795 {
|
|
|
796 ngx_buf_t *s;
|
|
|
797 ngx_chain_t *cl, **ll;
|
|
|
798
|
|
|
799 if (buf->shadow == NULL) {
|
|
|
800 return;
|
|
|
801 }
|
|
|
802
|
|
|
803 for (s = buf->shadow; !s->last_shadow; s = s->shadow) { /* void */ }
|
|
|
804
|
|
|
805 ll = free;
|
|
|
806
|
|
|
807 for (cl = *free ; cl; cl = cl->next) {
|
|
|
808 if (cl->buf == s) {
|
|
|
809 *ll = cl->next;
|
|
|
810 break;
|
|
|
811 }
|
|
|
812
|
|
|
813 if (cl->buf->shadow) {
|
|
|
814 break;
|
|
|
815 }
|
|
|
816
|
|
|
817 ll = &cl->next;
|
|
|
818 }
|
|
|
819 }
|
|
|
820
|
|
|
821
|
|
126
|
822 ngx_int_t
|
|
|
823 ngx_event_pipe_add_free_buf(ngx_event_pipe_t *p, ngx_buf_t *b)
|
|
0
|
824 {
|
|
32
|
825 ngx_chain_t *cl;
|
|
|
826
|
|
50
|
827 cl = ngx_alloc_chain_link(p->pool);
|
|
|
828 if (cl == NULL) {
|
|
32
|
829 return NGX_ERROR;
|
|
0
|
830 }
|
|
|
831
|
|
32
|
832 b->pos = b->start;
|
|
|
833 b->last = b->start;
|
|
|
834 b->shadow = NULL;
|
|
|
835
|
|
|
836 cl->buf = b;
|
|
|
837
|
|
|
838 if (p->free_raw_bufs == NULL) {
|
|
|
839 p->free_raw_bufs = cl;
|
|
|
840 cl->next = NULL;
|
|
|
841
|
|
|
842 return NGX_OK;
|
|
|
843 }
|
|
|
844
|
|
|
845 if (p->free_raw_bufs->buf->pos == p->free_raw_bufs->buf->last) {
|
|
0
|
846
|
|
32
|
847 /* add the free buf to the list start */
|
|
|
848
|
|
|
849 cl->next = p->free_raw_bufs;
|
|
|
850 p->free_raw_bufs = cl;
|
|
|
851
|
|
|
852 return NGX_OK;
|
|
0
|
853 }
|
|
32
|
854
|
|
|
855 /* the first free buf is partialy filled, thus add the free buf after it */
|
|
|
856
|
|
|
857 cl->next = p->free_raw_bufs->next;
|
|
|
858 p->free_raw_bufs->next = cl;
|
|
|
859
|
|
|
860 return NGX_OK;
|
|
0
|
861 }
|
|
|
862
|
|
|
863
|
|
126
|
864 static ngx_int_t
|
|
|
865 ngx_event_pipe_drain_chains(ngx_event_pipe_t *p)
|
|
0
|
866 {
|
|
|
867 ngx_chain_t *cl, *tl;
|
|
|
868
|
|
|
869 for ( ;; ) {
|
|
|
870 if (p->busy) {
|
|
|
871 cl = p->busy;
|
|
|
872 p->busy = NULL;
|
|
|
873
|
|
|
874 } else if (p->out) {
|
|
|
875 cl = p->out;
|
|
|
876 p->out = NULL;
|
|
|
877
|
|
|
878 } else if (p->in) {
|
|
|
879 cl = p->in;
|
|
|
880 p->in = NULL;
|
|
|
881
|
|
|
882 } else {
|
|
|
883 return NGX_OK;
|
|
|
884 }
|
|
|
885
|
|
|
886 while (cl) {
|
|
|
887 if (cl->buf->last_shadow) {
|
|
32
|
888 if (ngx_event_pipe_add_free_buf(p, cl->buf->shadow) != NGX_OK) {
|
|
28
|
889 return NGX_ABORT;
|
|
|
890 }
|
|
|
891
|
|
0
|
892 cl->buf->last_shadow = 0;
|
|
|
893 }
|
|
|
894
|
|
|
895 cl->buf->shadow = NULL;
|
|
|
896 tl = cl->next;
|
|
|
897 cl->next = p->free;
|
|
|
898 p->free = cl;
|
|
|
899 cl = tl;
|
|
|
900 }
|
|
|
901 }
|
|
|
902 }
|
